//1 #include<stdio.h>                             8829
//2 #define M 100 | 830
//3 int main() | 831 extern int ftrylockfile(FILE * __stream) __attri
//4 { | bute__((__nothrow__, __leaf__));
//5   printf("hello bit: aaa"); | 832
//W > 6 printf("hello bit: bbb", M); | 833
//7  // printf("hello bit: aaa");                 |834 extern void funlockfile (FILE *__stream) __attri
//8  // printf("hello bit: aaa");                 |    bute__ ((__nothrow__ , __leaf__));
//9  // printf("hello bit: aaa");                 |835 # 943 "/usr/include/stdio.h" 3 4   
//10  // printf("hello bit: aaa") ;                |836                                    
//11  printf("hello bit: ccc"); | 837 # 2 "mycode.c" 2
//12   return 0; | 838
//13 } | 839 int main()
//~